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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
shares in Billions
Sep. 29, 2018
Sep. 30, 2017
Statement of Financial Position [Abstract]    
Common stock, par value (usd per share) $ 0.01 $ 0.01
Common stock, authorized 4.6 4.6
Common stock, issued 2.9 2.9
Treasury stock, shares 1.4 1.4